WeightlessnessWeightlessness SimulationSpace FlightAstronautsHypergravityGravitationGravity, AlteredHindlimb SuspensionUnited States National Aeronautics and Space AdministrationHead-Down TiltHypogravityWeightlessness CountermeasuresAerospace MedicineBed RestGravity SensingLife Support SystemsEcological Systems, ClosedCosmic RadiationBioreactorsRotationSpace Motion SicknessCytoplasmic StructuresAdaptation, PhysiologicalHypotension, OrthostaticSpace SimulationMotion SicknessHalococcusSulfur HexafluorideCotyledonHaloferax mediterraneiCoriolis ForceExtraterrestrial EnvironmentSupine PositionAircraftPeroxiredoxin VIGravitropismVascular CapacitanceHeliumEarth (Planet)Muscle, SkeletalAccelerationMuscular AtrophyCardiovascular DeconditioningOrthostatic IntolerancePostureCell Culture TechniquesRats, Sprague-DawleyOrgan SizePlant Growth RegulatorsCardiovascular SystemSwimmingOsteoblastsBone and BonesCrystallizationPlant StemsBiomechanical PhenomenaTime FactorsMalate DehydrogenaseRespiratory MechanicsGingival Crevicular FluidMatrix Metalloproteinase 8Plant ShootsRussiaBaroreflexAlveolar ProcessSnailsBody WeightTorqueHeart RateNitric Oxide Synthase Type III